Abstract
Dry Sorbent Injection (DSI) is a process used to control sulfur dioxide (SO2) by injecting a powdered alkaline sorbent into the flue gas stream. The present paper uses Computational Fluid Dynamics to analyze the dry scrubbing process of an industrial plant made up of a short ductwork followed by a holding vessel. The resulting complex flow field strongly impacts the desulfurization efficiency, evaluated with the adsorption model proposed by Gutierréz Ortiz et al. [1,2]. A modified system’s configuration is also simulated and compared to the previous one in terms of a newly defined mixing efficiency parameter. The latter compares the calculated SO2 removal efficiency with the maximum efficiency achievable under the same operating conditions affecting the adsorption process and is helpful in the design of DSI plants.
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